API 5L – Line Pipe Chemical composition for PSL 2 pipe with t ≤ 25.0 mm (0.984 in)  max,  % Grade Heat and product analyses Carbon equivalent a C b Si Mn b P S V Nb Ti Other Seamless and welded pipes CEIIW CEPcm L245R or BR 0.24 0.40 1.20 0.025 0.015 c c…